I went on a trip 35 years ago after a night on a trolley bus. He sat down and immediately fell asleep - the night turned out to be very heavy, and even the younger cut his teeth, and the older one was infected with salmonella. At the end, the driver woke up - the conductors were not there at the time. He crossed the road, sat on the same trolley... and fell asleep again. At the other end, the driver, waking me up, realized that I was not a buoy. He asked where to wake up and woke up at the right stop.
Since then, I have not been driving sitting, only standing. still cut, you just start to see a dream, your legs bend, the body falls, but the brain intercepts control, you wake up sharply on half-bowns...
The people around disperse, think naric or alcoholic, and this is just a working guy going home at night.